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leaves around the flowers turning light green

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    #1

    leaves around the flowers turning light green

    Hi guy's,
    Does anyone here know why this is happening, and how do I fix it? It seems to be getting worse.
    These are 4 weeks into flowering, dwc system, Ph & EC are monitored and kept within the required range, it has been a little cold lately, but I don't think it's been cold enough to cause this.
    Any help is much appreciated.
    Thanks.
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    #2
    What are you feeding her?
    And do you know what strain it is?
    Coldness tends to turn a plant purple from what Ive seen so I think your safe there.
    Last edited by Wayzee; 06-23-2025, 11:05 PM.
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      #3
      Start a PK suppliment now.
      Flower Room: 11' x 7' x 7.5'H, 480w AC, 13gal/day dehumidifier, 1.5gal ultrasonic humidifier, 60gal (27gal usable) nute tank, 16" pedestal fan & 18" wall fan. Lighting and climate automated. Hand watering.
      Veg Cupboards: ​​​​​​Two 4x2x6H cupboards. SF2000 Evo in one SF7000 in other. Climate controlled and automated. Hand watering
      Aeroponics Low Pressure Bucket: 20W LED. 5 clones & 20W LED 11 clones
      Lights: Mars Hydro FC-E1200W, SF-7000, SF-2000 evo in flower room.
      Medium: Coco/perlite, 7.2gal pots, no drains
      Current Grow: ​​​5 x Photos Franklin's Orange Zkittles x Sour Diesel in flower room, 3 Franklin's White Widow x Sour Diesel Clones, 13 x Orange ZkittleZ x Sour Diesel clones in Aeroponics buckets x 2.
      Last Grow: A mix
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        #4
        Canna PK 13/14
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          #5
          Looks to me like its lacking N so its pulling it from the leaves but without knowing what your what your growing media is or if its a auto or photoperiod. You said in your post your tracking PH and EC but not what your target ranges are
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            #6
            These pics of them are now 5 weeks into flowering. Not sure if anyone knows this food, but it's what our local hydro store here in NZ offers. The top booster is a different brand from the food; it's the PK supplement I'm using, maybe not compatible with this food? DWC system PH is always somewhere between 5.5-6.2, EC is currently 1.6, nute temp 18 degrees Celcius, strain is Borderliner XTRM fem from AMS seeds. Up till around 3 weeks of flowering, I had the EC around 2.2 as directed on the feed schedule, but dialled that down and didn't see any real change. along with what Allenpro has suggested (lacking N) what else may I have wrong? TIA.
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            • Bluey
              #6.1
              Bluey commented
              06-30-2025, 08:05 AM
              Editing a comment
              Start pH at 5.8 and monitor.

              With an airstone running as it should it should climb to 6.5 to 6.7 or there abouts after 24 hours, then reset to 5.8

              If its not climbing make sure the airstone is working.

              Always use suppliments made by your base nute manufacturer. I ran into strife using a calmag not compatible with my base nutes...tank stank after a week.

              If you can't get calmag & pk suppliments from your base nute manufacturer change base nutes to one you can.....preferably a part A & part B base made for hydro.

              PM me if you need a good nute recommendation available where you are.
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